Tool-grinder



(No Model.)

N. (J. STILES.

TOOL GRINDER.

WITNESSES EWENTpE W 'I 7Z6?% ATTORNEYS.

N4 PETERS Pnowulhn m her, Washington. Dv C.

UNrrED STATES PATENT OFFICE.

NORMAN C. STILES, OF MIDDLETOWN, CONNECTICUT.

TOOL-GRINDER.

SPECIFICATION forming part of Letters Patent No. 366,897, dated July 19, 1887.

Application filed July 23, 1885.

To all whom it may concern:

Be it known that I, NORMAN O. STILEs, of Middletown, in the county of Middlesex and State of Connecticut, have invented a new and Improved ToolGrinder, of which the follow ing is a full, clear, and exact description.

The object of my invention is to improve the construction of machinesfor grinding tools; and it consists in the construction and combination of the several parts of the same, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a plan view of myimproved toolgrinder, parts being in section. Fig. 2 is a side view of the same, parts being in section. Fig. 3 is a detail endview of the upper part of the machine, parts being broken out and parts in section. Fig. 4 is an enlarged longitudinal elevation of the water-feeder. Fig. 5 is a plan View of the under side of the same.

A corundum or emery-wheel, A, is rigidly mounted on a shaft, A, journaled in suitable journal-boxes on the table 13, having an upwardly-projecting flange, B, on its rim and formed around a semicircular receptacle, C, in which the lower part of the wheel runs, the said receptacle being formed on a hollow stand, C, in which the water-reservoir C is formed, said reservoir being provided at its lowerend with a hand-hole, C, which is closed by a gate, C, held in place by bolts. The hand-hole is provided to facilitate the removal of sediment from the lower part of the reservoir.

At the upperedgc ofthe receptacle C grooved cleats D, each provided with a longitudinal slot, D, are formed, and into the said grooved cleats heads of bolts E are passed, the said bolts being passed through side wings, F, of inclined tool-rests F between the cleats, said wings F resting on the cleats. Nuts are then screwed on the upper ends of the bolts E, to hold the wings F down on the cleats and to hold the inclined plates F at the edge of the Wheel. The tool-restsF are inclined from the wheel downward. and outward, and serve also to prevent the water which is carried up by the wheel from being splashed upon the table.

Serial No. 172.389. (No model.l

The rests F also have flanges F which are close to the sides of the wheel. On the inner ends of the cleats D standards G- are secured, the upper ends of which are united by a crosspiece, G, to form the hood, carrying a bowl or receptacle, G for holding the tools to be ground. A Ushaped tube, H, having apertures II in its bottom, has its ends closed by screws J, and the said U-shaped tube is held on thelower end of an apron, K, having flanges K, and curved on a line having about the same radius as the wheel A. At the top of the apron K a plate, L, is formed, which is held against the under side of the cross-piece G, uniting the standards G by a screw, M, passed through a longitudinal slot, L, in the said plate L, thus permitting of shifting the plate L in the direction of its length, whereby the U-shaped tube H is moved a greater or less distance from the rim of the wheel. A short tube or neck, N, projects upward from the U- shaped tube H, and is connected by a flexible tube, N, with the upper end of atube, 0, projecting upward from a rotary force-pump, 1?, held on the side of the frame C, near the bottom of the same. The tube 0 has a cock, 0.

The rotary pump 1? is operated by a belt passed over a pulley, Q, on the shaft ofthe rotary pump and over a pulley, Q, on the end of the shaft A. The pump 1 is connected by a pipe, 0", with the reservoir. An apron or water-protector, R, is pivoted by a bolt, R, to the standards G at the upper parts of the side edges opposite those at which the U-shaped tube H is located, and the said apron It serves to prevent the water from being splashed into the face of the operator.

The operation is as follows: The wheel is revolved, and from the shaft of the wheel the pump 1 is operated and pumps the water from the reservoir C through the pipes O and N into the U-shaped tube H, through the apertures H of which the water is forced under pressure upon the wheel, liows from the same into the receptacle 0 and back into the reservoir C, and so on. The sprinkling-tube H can 'be adjusted a greater or less distance from the rim of the wheel, all that is necessary being to pull said tube outward or push it inward as its top plate, L, is mounted to slide on the crosspiece G, uniting the standards G.

The supply of water delivered upon the wheel can be regulated by means of the cock 0.

Having thus described myinvention,-what I claim as new, and desire to secure by Letters Patent, is-

5 1. The combination, with a grinding-wheel stand having a hood, of an apron mounted to slide on said hood, a perforated U shaped tube on the lower edge ofthe apron, and screws for closing the ends of the U shaped tube, sub

10 stantially as herein shown and described.

2. The combination, with a grindingwheel stand having a hood, of an apron mounted to slide on said hood, a perforated U-shaped tube held on the lower end of the apron, the

I 5 tube N, proj eetin g upward from said U shaped tube, and a flexible tube connecting said tube N with a pump, substantially as herein shown and described.

3. The combination, with a grinding-wheel stand having a hood formed of the uprights G, 20 united by the top plate,G, of the apron K, provided with a top plate, L, having a slot, L, and of the screw M, passed through said slot L into the cross-piece G, substantially as herein shown and described.

NORMAN o. STILES.

Witnesses:

OSCAR F. GUNZ, EDGAR TATE. 

